Expanded metal.



Asired cross sectionall a'rea and' shape. In `the form-shown the ribsare round and pro- Noiaitis' ELMOREIQLABK, or rLAiNv-ILLE, CONNECTICUT.

'Seele Toall whom 'it may conce-nn: A

B et-knoivntliat I, Noiciiis Enitoini Gmini, a'citzenof the UnitedStates, residing at Plainville, 11i the countv ofHai-tfo'rd and -State.of Connecticut-,- have invented certain new and useful Improvements inExpanded -Metal, of which the 'following is 'a specification.

l' My inveiition relates to improvements in expanded metal fabrics.:

One object of the invention islto provide lafabric which can bemanufactured econoinically.A

Another object is togive great strength' -to the fabric.

l.The'accoi'npanying single sheet of drawings illustrates one form of!the invention.

It'will be found highly attractive in appearaiice. The fabric consistsof bentstrips connected. at' intervals 'in alternating ar-i.rangeineiit, .some of the strips -being 'of greater cross sectionallarea than t-'lie others.

Figure l, is across sectional view 'of a slieetof material slittedpreparatory to ef:-

pans'ion into my improved fabric. Figl'l, is a. plan view of the saine.Fig. 3, is a 'planview ofthe expanded nie-tal fabric of .my invention.

The fabric is formed by iii-st slittinga slieetin staggered or.alternating arrangement and then stretching or expanding it. Figs. 1and 2 show the arrangement of slitf'ting.' The raw material is what isknown as a-rolled section consisting of webs such as Land 2 and ribssuch as and trof the de- 'ect above and below the planeot'thewebs.

referably the stockis slitted so that ea'ch rib such 'as 43 and thenarrow flanges such'- as. 5 and 6 constitute one of the strips. The

other strips 7, 8 and 9 are formedv from the' web 1 b slitting instaggered arrangement by V-s'uita le cutters. Preferabl. no :stock 'isremoved in slitting but l Wish it understood. that' I' considerinyinvention to cover a lpr'oduct found as herein set forth evenif .someof the' material is cut-'out by' perfof 'rating or otherwise.

been. ,slittedv as described it is stretched 'orl lVhen the stock hasexpanded by suitable mechanism. The forni after*expansionl will dependsomewhat upon fthe nature of the expansion process. Pref i Specificationof Iiette'rs P'atent. applicati@ inea may 29. 1908. serial No. 435,730..

EXPANDED erably thestrips 3, 7. 8,.-9; 4etc. extend in the generaldirectionA of length of the fabric;

The larger strips such tis-3 and 4 constitute longitudinal rodsor barsand the. 1i liter strips such as i', 8 and Q -form reticu ated.

connecting webs. The proportions of.- the ribs and ivebs may be variedand the slit- 'ratenea nette, '191'0.

ting may 'be such as to produce a greater or smaller number oftlieQ-webstrips rela- 'tire to the rib strips ,if desired. So also therelatiye length of the slits may begcliangeda. fand theexpansion'carriedto agreater' or less extent. This will varythe size:oftlie openings and-the' angle ofthe4 bends lin the strips. j Thea'ibstri s. tis-.shown are all parallelivhile the We strips :zigezag backand forth between.

Obviously the fabric las illustrated may be subsequently formed; curved.or suitably treated fornspeci'al purposes as arches, beams 'and'columns.

11n-in expandednietal .fabric consisting of longitudinal zigzag stripsconnected in alternating arrangement, some of said strips being ofgreatercross 4sectionalfaifea than AAthe others. c

:2. An'exp'anded m'jetal fabric consisting.

of longitudinal zig-zag 4.strips integrally connected inalternatingarrangement, some of the. strips being of greater thicknessthan the others.

B QAn 'expanded meta-l fabric consisting of' longitudinal zig-zag strips'integrally connected. in\ alternating arrangement some.

of the strips being of greater4 thickness than the others, theiiiteriiiediate-strips alllying iii the same plane. A

.Jf. An expandedV metal-.fabric consisting of longitudinal. zig-zagstrips integrally connected in alternating' arrangement some of thestrips being of greater thickness than the others and rounded .on at.least one surface.. f

Anexpanded' metal fabric consisting of longitudinal; zig-zag strips'integrally ,connected iii alternating arrangement sonic -of the stripsbeing of. eater thickness than.

the others' and ro'uiide 'onv bothl surfaccs. (Lern expanded metalfabric consisting of parallel zig-.zag beiit ribs andreticulatcdconnecting ivebs of less thickness.

ylos

.- .\'ii expanded nietal fabi-ic consisting'

